1 kinds · tap one for a closer look
Semi-aggressive, shy and a predator.
239 species in our list are a good match.
Semi-aggressive, shy and a predator. Keep in a group of 6 or more and avoid tiny tankmates.
Live and frozen foods such as feeder shrimp and fish; often accepts pellets.
Tap a food to see what it is.
No reliable external differences are known; adult females are probably fuller-bellied when ready to spawn.
Common problems. Tap one to see the signs. This is a guide, not a diagnosis.
Egg-scatterer · Hard
Not known to have been bred in captivity; probably spawns like Chanda ranga (adhesive eggs among plants).
A group of 6 or more.
A 300 L tank with plants and a brackish tendency.
Warm water, live food and large tank.
100-300 eggs; hatch in 24-48 hours.
Feed infusoria, then baby brine shrimp.
A large, see-through glassfish from Southeast Asian rivers and floodplains that can reach about 20 cm (usually less in aquaria) and eats any small tankmates. Common in its home countries, where it is a food fish.
Pieter Bleeker described this glassfish in 1850. It is the giant of the Asian glassfishes, reaching around 20 cm. It is occasionally imported for larger tanks.
First described by Pieter Bleeker in 1850.
14 facts checked with sources
Valid name (often misspelled 'wolffi'). Catalog of Fishes habitat: freshwater only; Seriously Fish: 'This is a freshwater species and does not require the addition of salt to its tank.' The legacy breeding setup's 'brackish tendency' is wrong. Named after J. Wolff (FishBase eponymy), so the common name is 'Wolff's', not 'Wolf's'; standard names are duskyfin glass fish / duskyfin glassy perchlet.
Eschmeyer's Catalog of Fishes: Parambassis wolffii · FishBase: Parambassis wolffii, Duskyfin glassy perchletLegacy had no family field.
FishBase: Parambassis wolffii, Duskyfin glassy perchlet · Eschmeyer's Catalog of Fishes: Parambassis wolffiiBoth sources 20 cm SL (standard length). Seriously Fish adds it grows to around 20 cm 'though not usually in aquaria'; FishBase common length 9.4 cm SL.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish) · FishBase: Parambassis wolffii, Duskyfin glassy perchletBoth sources 18-25 °C; legacy 22-28 is too warm at the top.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish) · FishBase: Parambassis wolffii, Duskyfin glassy perchletLegacy top of 8.5 exceeds the sourced 8.0. Legacy 'mistakes' list calls soft acidic water a mistake; 6.5 is within range.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Legacy had no hardness; value is new.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)120 x 30 x 30 cm = 108,000 cm³ = 108 L (Seriously Fish minimum). Legacy 250 L is more generous; reasonable for a group of 6 fish up to 20 cm, but not the sourced minimum.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Predatory toward small fish but fine with medium-sized tankmates; Seriously Fish also calls it shy.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Seriously Fish difficulty rating Moderate.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Legacy had no range field.
Eschmeyer's Catalog of Fishes: Parambassis wolffii · FishBase: Parambassis wolffii, Duskyfin glassy perchlet · Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Legacy 'males more colourful / longer anal fin' is unsourced.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Legacy says 'rarely bred'; source says not bred at all.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)Legacy claims agree.
Seriously Fish: Parambassis wolffii (Duskyfin Glass Fish)